Apparatus for winding a yarn



Dec. 3976 KANAME WATABE ET AL ,543,503

APPARATUS FOR WINDING A YARN Filed May 21, 1968 4 Sheets-Sheet 1 KANAMEWATABE ETAL 3,543,503

Dec. 1, mm

APPARATUS FOR WINDING A YARN 4 Sheets-Sheet 2 Filed May 21, 1968 Dec. 1,Wm MAME WMABE 51- AL 3,543,503

APPARATUS FOR WINDING A YARN Filed May 21, 1968 4 Sheets-Sheet 5 ec. E,176 KANAME ETAL 3,543,503

APPARATUS FOR WINDING A YARN Filed May 21, 1968 4 Sheets-Sheet 4.

Int. Cl. D0111 7/52, 7/58 US. CI. 57-75 1 Claim ABSTRACT OF THEDISCLOSURE Apparatus for winding a yarn package on a stationary bobbinand of the kind in which the yarn is passed through a snail wire to ayarn guide rigidly coupled with a ring which surrounds the axis andwhich is driven to rotate about the axis so that non-twisted yarn can beobtained when the yarn is left off from the package for certainafter-treatment of the yarn.

This invention relates to apparatus for Winding a yarn package on astationary bobbin and of the kind in which the yarn is passed through asnail wire to a yarn guide rigidly coupled with a ring which surroundsthe axis and which is driven to rotate about the axis so that nontwistedyarn can be obtained when the yarn is let 01f from the package forcertain after-treatment of the yarn.

As it is known in twisting technology that there is winding-off twistwhen the wound package is unwound overhead while standing still, itmight be expected in applying the method according to the invention thatif non-twisted yarn is subjected to the winding process then the twistprecedently applied by winding on the bobbin is counterbalanced and anon-twisted yarn is wound off.

The multifilament yarn spun through the spinneret of the spinner isdivided into a number of separated monofilaments state so that doublingwith other filaments of different nature can be conveniently applied forthe purpose of obtaining intended efiects when the filaments arefabricated in apparel form as to the luster and hand etc.

The present invention contemplates the provision of a compact windingapparatus to meet this end by which it is possible to Wind offefficiently at high speeds yarns having substantially no twist.

Accordingly, the present invention is directed to an apparatus which ischaracterized in that in the apparatus for winding yarn on a bobbin byfeeding the yarn axially of the bobbin, wherein a rotating ring isdisposed enclosing a non-rotating fixed bobbin in an annular bearinghaving an inside diameter greater than the maximum diameter'of the fullywound bobbin, said ring being supported by an air bearing, the yarn isfed to the bobbin via a yarn guide directly secured to said ring, andthe bobbin and ring are caused to make reciprocative movement relativelyof each other axially of the bobbin.

Other objects and effects of the present invention will become apparentfrom the detailed description of the invention which follows and theaccompanying drawings and appended claim.

FIG. 1 is a schematic view illustrating one embodiment of the invention.

FIG. 2 illustrates a ring and bearing portion in the embodiment of FIG.1, these parts being especially shown in section.

FIG. 3 which illustrates another embodiment is one having a yarn tensiondetecting device and a means for controlling the electric motor.

: ted States Patent FIG. 4 which illustrates a still another embodimentis one which uses the ring as a rotor of the electric motor.

FIG. 5 shows a view partly broken away of another embodiment of theinvention wherein the ring is driven by air jet.

FIG. 6 is a view showing the construction of only the ring of theapparatus illustrated in FIG. 5.

In FIG. 1 yarn 1 from the unwinding package proceeds as shown by thearrow to be conveyed to a yarn guide 4 via tensioning device 2 and snailwire 3. As shown more fully in FIG. 2, the yarn guide 4 is secured to aring 5. In the same figure the ring 5 fits rotatably to the periphery ofan annular bearing 6. The inside diameter of the annular bearing 6 isgreater than that of the yarn package when fully wound. The ring 6 has abelt 7 mounted about its outer periphery and is rotatively driven by anelectric motor (not shown). The numeral 8 denotes an inlet provided inthe hearing from which air is introduced under pressure, while 9 is aduct provided annularly about the inside of the annular bearing 6 and isin communication with the inlet 8. The duct 9 is also in com municationwith the nozzles 10 and 11 from which compressed air is jetted againstthe bearings outer peripheral surface to function as a lubricant betweenthe ring 5 and the annular bearing 6.

Reverting to FIG. 1 a bobbin 12 is mounted atop a spindle 13. While thespindle 13 is fitted in a hole 15 of a rail 14 so as to be slidablevertically it is keyed 16 therein and hence cannot rotate but makes avertically traversing movement by means of a device (not shown).

This apparatus operates in the following manner. When the ring 5 isrotated at a high speed by a motor 21 via the belt 7, yarn 1 proceedsvia a tensioning device 2 to the yarn guide 4 under suitable tension andis wound on the bobbin by the rotation of the guide 4. Since the bobbin12 in the meanwhile continues to make its vertical movement, the yarn istraversed on the bobbin and forms a package P. In this instance, themethod of winding is preferably by the parallel winding technique, asshown in the drawings.

FIG. 3 illustrates another embodiment of the invention. In thisembodiment the yarn 1 is supplied at a constant speed at all times bymeans of a feed roll 17. The yarn 1 winds about the feed roll 17 and anauxiliary roll 18, as shown in FIG. 3, and then contacts a tensiondetecting roller 19 to arrive at a snail wire 3. Fluctuations in thetension of the yarn is detected by means of the tension detectingroller, with the consequence that a controlling device 20 is operated tothereby control the speed of the motor to regulate the speed at whichthe ring 5 rotates and hence maintain the tension of the yarn beingwound constant at all times.

Next, in the case of the apparatus illustrated in FIG. 4, the ring 5itself is made the rotor of the electric motor and a stator 21 isdisposed surrounding the ring 5. This apparatus is featured in that theoverall size thereof has been made mechanically compact and by reducingthe inertia of the rotating portion it has been made more easilyresponsive to the fluctuations in the yarn tension.

On the other hand, the apparatus shown in FIG. 5 is one which is rotatedby jetted air. Vanes 22 or slanted holes 23 are provided in the ring 5,as shown in FIG. 6. Numeral 24 denotes a duct which has been annularlyprovided in the bearing 6 and compressed air is introduced into thisduct from an inlet line 25. Numerals 26 and 27 denote jetting holes, theair fed to the annular duct 24 being jetted from the holes 26 tofunction as an air bearing between the ring 5 and the annular bearing 6,while a part of the air is jetted from the jet holes 27 to rotate thering 5. According to this embodiment, not only is the construction ofthe apparatus simplified by also the winding of the package with auniform firmness is made possible.

While the embodiments presented hereinabove are those in which thebobbin spindle made a reciprocative movement relative to the ring, itis, of course, also possible for the ring to make a reciprocativemovement relative to the bobbin spindle. And in this case, it isdesirable to ensure that the distance between the yarn conducting means,ie the snail wire, and the ring is maintained constant.

Since the setup of the apparatus of the present invention comprises anannular bearing provided so as to enclose a fixed bobbin, the insidediameter of which bearing is greater than the maximum diameter of thebobbin when fully wound, a ring on this bearing supported by means of anair bearing, and a guide secured to the ring whereby the yarn is woundon the bobbin, the apparatus is compact and is capable of high speedrotation. In addition, the yarn can be wound while being imparted atwist in the opposite direction corresponding to the winding-01f twist.

Further, when a plurality of winding units are assembled as a single setand the set is driven by a single motor, the operation of all the unitsof the set can be controlled by the detection of the tension of one ofthe units.

What is claimed is:

1. An apparatus for winding yarn by feeding the yarn axially of anon-rotating bobbin; comprising means for axially reciprocating saidbobbin, an annular bearing disposed concentrically about said bobbin,the inside di- 4 ameter of said bearing being greater than the maximumdiameter of the yarn package, a ring rotatably provided on the outsideof said annular bearing, a yarn guide directly secured to said ring andmeans for rotating said ring whereby when said ring is caused to berotated, the yarn is wound onto said bobbin.

References Cited UNITED STATES PATENTS 1,127,994 2/1915 Hill et a1 571242,026,155 12/1935 Abbott 5793 2,796,726 6/1957 Klein 57--124 XR2,907,165 10/1959 Adams et al 5775 2,932,152 4/1960 Jackson 57124 XR2,946,175 7/1960 Wright 57124 XR 3,025,657 3/1962 Noordenbos 57753,174,270 3/1965 Blaschke 57-92 XR 3,241,304 3/1966 Mattingly et a1.57100 XR 3,256,683 6/1966 Andersen et a1. 5799 XR FOREIGN PATENTS803,590 10/ 195 8 Great Britain.

STANLEY N. GILREATH, Primary Examiner W. H. SCHROEDER, AssistantExaminer US. Cl. X.R.

